How far is Decatur, AL from Mobile, AL?
The driving distance from Decatur, AL to Mobile, AL is about 342 miles (550.4 km), with a travel time of about 04h 52m by car.
- The straight-line flight distance is about 277.2 miles (446.1 km).
- For a round trip, plan for roughly 09h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 04h 52m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The capital of Alabama.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Decatur and Mobile.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Mobile.
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1
Start on the route
130 m · 37 sec
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2
At the end of the road, turn left onto Ferry Street Northeast
50 m · 9 sec · Ferry Street Northeast
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3
Turn left onto Lee Street Northeast
1583 ft · 53 sec · Lee Street Northeast
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4
At the end of the road, turn right onto 6th Avenue Northeast
580 ft · 15 sec · 6th Avenue Northeast
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5
Continue on 6th Avenue Southeast
3 mi · 6 min · 6th Avenue Southeast
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6
Turn left onto Point Mallard Parkway
4.2 mi · 6 min · Point Mallard Parkway
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7
Take the ramp slight right toward I-65 South: Birmingham
1944 ft · 47 sec
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8
Merge slight left
67.1 mi · 1 hr 12 min
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9
Take the exit slight right toward I 22 West, US 31: Memphis, Fultondale
2715 ft · 38 sec
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10
Keep slight left to continue on I 22 West: Memphis
2666 ft · 38 sec
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11
Keep slight left to continue on Montgomery
1940 ft · 28 sec
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12
Merge slight left
254.5 mi · 4 hr 38 min
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13
Take the exit slight right toward I 165: Mobile
3185 ft · 42 sec
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14
Continue straight
4.7 mi · 6 min
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15
Turn right onto Saint Joseph Street
1977 ft · 1 min · Saint Joseph Street
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16
Turn right onto Saint Louis Street
12 m · 1 sec · Saint Louis Street
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17
Arrive at your destination
0 m · 1 sec · Saint Louis Street
Car Route Details
A richer read on the saved driving route between Decatur and Mobile.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Montgomery
Merge slight left
254 mi · 04h 38m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Decatur and Sunny near Mobile.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Mobile?
The road trip is about 342 miles (550.4 km) and usually takes 04h 52m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Montgomery is a useful midpoint, sitting about 168.6 miles from Decatur and 173.5 miles from Mobile.
How much longer is the road route than the straight-line distance?
The direct path is about 277.2 miles (446.1 km), while the road route adds roughly 64.8 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 7:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $45.71 one way or $91.42 round trip. Estimated CO2 is about 107.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Decatur and Sunny near Mobile.
Stop Ideas Near Montgomery
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Montgomery.
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Flight Path Map
This map shows the direct air route between Decatur and Mobile. Straight-line distance: 277.2 mi (446.11 km).
#1 Decatur
The most populous city in Morgan County, Alabama.
| Population | 54,381 |
| Coordinates | 34.6059300, -86.9833400 |
| Altitude | 171 |
| Country | United States |
#2 Mobile
The second most populous city in Alabama.
| Population | 187,746 |
| Coordinates | 30.6943600, -88.0430500 |
| Altitude | 3 |
| Country | United States |
End: Saint Louis Street (-88.043038, 30.694332)
Estimated Travel Time
Distance: 550 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 23m |
| 40 mph (64.37 km/h) | 08h 33m |
| 50 mph (80.47 km/h) | 06h 50m |
| 60 mph (96.56 km/h) | 05h 42m |
| 70 mph (112.65 km/h) | 04h 53m |
| 80 mph (129 km/h) | 04h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $45.71 | $91.42 |
| Mid-grade | $4.26 | $51.41 | $102.81 |
| Premium | $4.63 | $55.82 | $111.65 |
| Diesel | $5.42 | $65.36 | $130.72 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Alabama · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.